#include<bits/stdc++.h>
using namespace std;
int main()
{
	int i,j,n;
	cin>>n;
	for(i=1;i<=n;i++){
		for(j=1;j<=n-i;j++) cout<<" ";
		for(j=1;j<=2*i+n-2;j++) 
		if(i==1||j==1||j==2*i+n-2) cout<<"*";
		else cout<<" ";
		cout<<endl;
	}
	for(i=2;i<=n;i++){
		for(j=1;j<=i-1;j++) cout<<" ";
		for(j=1;j<=3*n-2*i;j++) 
		if(i==n||j==1||j==3*n-2*i) cout<<"*";
		else cout<<" ";
		cout<<endl;
	}
	return 0;
}

/**************************************************************
	Problem: 1011
	User: ccf
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/